Adding the initial documentation

_pages/docs_main.md

@@ -0,0 +1,25 @@
+---
+layout: single
+title : "Documentation"
+author_profile: false
+excerpt: "Welcome to the Grid documentation pages"
+header:
+  overlay_color: "#5DADE2"
+  #cta_label: "Download documentation"
+  #cta_url: "https://www.google.com"
+sidebar:
+  nav : docs
+permalink: /docs/
+---
+
+{% include base_path %}
+
+We are currently working on the full documentation.
+
+Use the sidebar on the left to navigate. 
+
+_Nov 2016 : The API description and Lattice Theories sections in the sidebar are work in progress_. 
+
+
+
+{% include paginator.html %}